From 5a6c8e588b8a0dbb98d4b5ad36e9fed0183173b6 Mon Sep 17 00:00:00 2001
From: icex2 <djh.icex2@gmail.com>
Date: Sat, 23 Jan 2021 23:05:52 +0100
Subject: [PATCH] util/sock-tcp: Fix non blocking receiving, detect broken
 connection

---
 src/main/util/sock-tcp.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/main/util/sock-tcp.c b/src/main/util/sock-tcp.c
index 4e11475..a823fea 100644
--- a/src/main/util/sock-tcp.c
+++ b/src/main/util/sock-tcp.c
@@ -260,9 +260,12 @@ ssize_t util_sock_tcp_recv(int handle, void* buffer, size_t size, uint32_t timeo
         }
 
         return -1;
+    } else if (length == 0) {
+        // connection lost
+        return -1;
+    } else {
+      return length;
     }
-
-    return length;
 }
 
 void util_sock_tcp_close(int handle)